qede: Add support for {get, set}_ringparam

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index a65a9b2..7c6caf7 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -270,13 +270,13 @@ int qede_change_mtu(struct net_device *dev, int new_mtu);
 void qede_fill_by_demand_stats(struct qede_dev *edev);
 
 #define RX_RING_SIZE_POW       13
-#define RX_RING_SIZE           BIT(RX_RING_SIZE_POW)
+#define RX_RING_SIZE           ((u16)BIT(RX_RING_SIZE_POW))
 #define NUM_RX_BDS_MAX         (RX_RING_SIZE - 1)
 #define NUM_RX_BDS_MIN         128
 #define NUM_RX_BDS_DEF         NUM_RX_BDS_MAX
 
 #define TX_RING_SIZE_POW       13
-#define TX_RING_SIZE           BIT(TX_RING_SIZE_POW)
+#define TX_RING_SIZE           ((u16)BIT(TX_RING_SIZE_POW))
 #define NUM_TX_BDS_MAX         (TX_RING_SIZE - 1)
 #define NUM_TX_BDS_MIN         128
 #define NUM_TX_BDS_DEF         NUM_TX_BDS_MAX

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index ea2fda8..10d80ba 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -333,6 +333,48 @@ static u32 qede_get_link(struct net_device *dev)
        return current_link.link_up;
 }
 
+static void qede_get_ringparam(struct net_device *dev,
+                              struct ethtool_ringparam *ering)
+{
+       struct qede_dev *edev = netdev_priv(dev);
+
+       ering->rx_max_pending = NUM_RX_BDS_MAX;
+       ering->rx_pending = edev->q_num_rx_buffers;
+       ering->tx_max_pending = NUM_TX_BDS_MAX;
+       ering->tx_pending = edev->q_num_tx_buffers;
+}
+
+static int qede_set_ringparam(struct net_device *dev,
+                             struct ethtool_ringparam *ering)
+{
+       struct qede_dev *edev = netdev_priv(dev);
+
+       DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
+                  "Set ring params command parameters: rx_pending = %d, tx_pending = %d\n",
+                  ering->rx_pending, ering->tx_pending);
+
+       /* Validate legality of configuration */
+       if (ering->rx_pending > NUM_RX_BDS_MAX ||
+           ering->rx_pending < NUM_RX_BDS_MIN ||
+           ering->tx_pending > NUM_TX_BDS_MAX ||
+           ering->tx_pending < NUM_TX_BDS_MIN) {
+               DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN),
+                          "Can only support Rx Buffer size [0%08x,...,0x%08x] and Tx Buffer size [0x%08x,...,0x%08x]\n",
+                          NUM_RX_BDS_MIN, NUM_RX_BDS_MAX,
+                          NUM_TX_BDS_MIN, NUM_TX_BDS_MAX);
+               return -EINVAL;
+       }
+
+       /* Change ring size and re-load */
+       edev->q_num_rx_buffers = ering->rx_pending;
+       edev->q_num_tx_buffers = ering->tx_pending;
+
+       if (netif_running(edev->ndev))
+               qede_reload(edev, NULL, NULL);
+
+       return 0;
+}
+
 static void qede_update_mtu(struct qede_dev *edev, union qede_reload_args *args)
 {
        edev->ndev->mtu = args->mtu;
@@ -424,6 +466,8 @@ static const struct ethtool_ops qede_ethtool_ops = {
        .get_msglevel = qede_get_msglevel,
        .set_msglevel = qede_set_msglevel,
        .get_link = qede_get_link,
+       .get_ringparam = qede_get_ringparam,
+       .set_ringparam = qede_set_ringparam,
        .get_strings = qede_get_strings,
        .get_ethtool_stats = qede_get_ethtool_stats,
        .get_sset_count = qede_get_sset_count,